Hot-air furnace



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E. D. WHIDDEN v HT AIR FURNACE Filed Oct. 22, 1925 Feb. 22 1927'.4

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Feb. 22,1927.

\ E. D. wH|DDEN HOT AIR FURNACE 2. Sheets-Sheet 2 Filed Oct. 22, 1 925 El). Whe

Patented Feb. 22, 1927.

ERNEST n. WHIDDEN, or Poltrona, cALIFoRnmf Y Vr,nor-Am ruRNACE. f

I ppue'etio'n fnea oeteeer 22;"192'5'. 1serial Nof 64,2091

y It is'within theprovince of the disclosure tov ,improve genf'erallyf` and Vto enhance the utility ot' devices of that type toiwhich the inv'e11t'ionappertains. v ,e l ,v lith the abovev and? other objects in view which will appear as the' description proceeds, the invention resides in the combination and arrangement oi parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodimentot' the invention hereindisclosed, may be made within the scope of what is claimed, without departing from the spirit of the invention.

In the drawings Figure l shows in vertical section, a device constructed in accordance with the invention, parts being in elevation; Figure 2 is a sectional detail View of one of the valves; Figure 3 is a section taken horizontally, about on the line 3 3 ot'Figure 1; Figure 4 is a section taken about onthe line 4-4 of Figure 1, the casing being indicated diagrammatically.

The numeral 1 marks the floor of a building, and below the floor is disposed a casing 2 which is closed at its lower end, a grating or register 3 being mounted on the ioor 1 and extending across the upper end of the casing 2, the grating 3 having amovable section d. Fresh air may be supplied to the casing 2 in any vdesired way, `for instance, by means of a pipe 5 communicating at its lower end with the casing 2 near to the bottom of the casing, and extended at its upper end through the floor 1, at some distance from the casing 2, as shown inl Figure 1.

Partly supported at 6 within the casing 2 is a radiator, which is denoted generally by the numeral 7, the radiator comprising end plates 8 and elongatedtubes 10 mounted atvv their ends in the plates 8 and opening through the said plates. rlkhe plates 8 are united by connections 11. At one end, the tubes 10 communicate with a header 12 mounted on one of the end plates 8,y At their opposite ends, the tubes 10 communicate with' afheadter'ld mounted on theco'rresponding end plate. The end plates 8 Aof the radiator 7, and the' head'er's12 and 14e, extend downwardly' below the tubes' 10, 4as

shown inA Figure 1.`r n'outlet '15 for the products of combustioncommunicate with 'the lower portionof the headerV 14 and dischargesl outwardly through"` 'one end fof the CaSDeQ- Y ,1.

A plurality of horizontally afliniedv flues 16 are mounted lat, their outer ends on the lower portion of one ofthe'- end plates 8 and communicate withthe lowery portion of the header 12. At their inner ends, the tlues 16 communicate with the transverse head 17 ot' aY vertical heater' 18 supported on the bottom of thecasingv2. `lithin the heater 18,' at the lowerend thereof, are located burners 19 communicating with a lower manifold 20 to which leadsa horizontal pipe v21 disposed below` the bottom of' the casing 2. The pipe 21 has a flared end 23. A nozzle 2d discharges into the flared end 23 of the pipe 21, the lnozzle 24 being carried by a cou lin 25 the nozzle havin(y an internal seat 26, withvwhich cooperates a valve 27, the valve being threaded into the coupling 25, 'and being connected by a universal joint 28 with an inclined shaft 29, the shaft 29 extending upwardly into the casing 2, andV being connected by a universal joint 30 with a vertical shaft 3l supported for rotation in the grating or register 3,V and adapted, at its upper end, to be operated by a removable key 32, or in any other desired way. Fuel is supplied to the coupling 25 through a pipe 33 located below the casing 2, a rotat`- able valve 35 being interposed in the pipe 33, the valve having an arm 36 to which is pivoted an upwardly extended connection 37, the upper end ofthe connection 37 being Vpivoted to a lever 38 fulcrumed at 39 on the casing 2 and locatedwithin the casing, the lever being accessible through the grating or register 3, and having a socket 40, into which a nail or other 'object-f may be inserted, to bring about a swingingV of the lever 38. A lighting tube Ll2 extends downwardly thro-ugh the radiator 7 and communicates at its lower end with the transverse head 17 ofthe heater 18, the tube 42 being surmounted by a removable cap 13 which is accessible when the movable section 4 of the register 3 is opened.

In practical operation, .the fuel flows llov through the pipe 33, under the control of the valve 35, the valve being operated by a t 'ain of elements including the arm 3G, the connection 37 and the lever 38. A line adjustment in the amount of fuel delivered to the nozzle 24 is secured by means of the. valve 27, it being possible to adjust the position of the Valve 2T with respect to the seat 26, by rotating the valve through the instrumentality of the shaft 29, the shaft 3l, and the key 32. The fuel is discharged from the nozzle 24 into the flared end 23 ot the pipe 21, air entering the pipe 21 through the ilared end 23, the mixture passing to the burners 19. By opening the section 4C of the grating 3, and by removing the cap 43, the fuel lnay be ignited at the burners 19, through the tube 42, by means oi" a torch, or by means of av match dropped downwardly through the tube 42. The products of' combustion pass upwardly into the head 1T of the heat-er 18 and proceeds, by way o'll the lues 16, into the lower portion oi the header 12. The products otcoinbustion pass upwardly in the header 12, and, thence, move through the tubes 10, the products of com bustion passing from the tubes 10 into the header 14A, and leaving by way of the out-let 15. The tubes 10 of the radiator 7 are heated, and the air within the casing 2 is heated,` the air rising through the grating or register 3, the air beiner supplied to the easing 2 by way of the pipe 5.

rIhe air within the casing 2 is heated not only by the radiator 7, but is heated, also, because the heater 18 is located within the casing.

lVhat is claimed is In a device ol the class described, a casing having an outlet opening, means for admitting air to the casing, a. radiator in the easing and including spaced vertical headers and horizontal tubes connecting the headers, the Vertical transverse dimension ot' each tube being materially greater than.

its horizontal transverse dimension, the tubes being disposed in a single horizontal row, the headers coi'nprisin)r depending parts prolonged downwardly elow the tubes, the depending part ol one header being s upplied with an outlet, a heater in the easing,

and extended upwardly between the depending parts of the headers, and a plurality of lines, located in approximate horizontal alineinent and disposed below the tubes, the -(lues communicating with the upper portion of the heater and with the depending part of the other header.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

ERNEST D. VHIDDENq 

